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Author Topic: 78 CJ7 Master Cylinder Leak  (Read 2852 times)

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IrishKenCJ7

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78 CJ7 Master Cylinder Leak
« on: January 08, 2013, 10:36:21 AM »
Ladies,
Mechanic just called and said I have a leak on the brake master cylinder (78 Cj7 GEagle RHD).  I would need a full repair kit with all the rubbers or a replacement master cylinder.

What are my options, any supplies in the UK and any other Jeeps I can take one from, are repair kits cheaper but would I be paying for labour? There is a wrangler YJ 4.0 for breaking for sale in Ireland I could use a few things out of it. Are thee same cylinders. I could use the power steering from it also.

If I need to buy a master cylinder should I just go with Power brake Cylinder.

Any help appreciated,
Ken
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wildwood

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Re: 78 CJ7 Master Cylinder Leak
« Reply #1 on: January 08, 2013, 11:03:41 AM »
Firewall is similar...or bulkhead..... Some YJ guys use the TJ.....
YJ 1200 psi
TJ 1500 psi

better brakes :icon_super:
worth having a trawl on Pirate 4x4  if you want further low down
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Bulldog67

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Re: 78 CJ7 Master Cylinder Leak
« Reply #2 on: January 08, 2013, 07:27:11 PM »
how flush ya feelin? ifsja homegrown vendors section  :greggmo:

I have all Wildwoods old YJ parts to mod the CJ, all for the price of a merlot if memory serves me correctly

first google site: http://street2mud.com/forum/index.php?showtopic=28
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Bulldog's 22+ trucks: http://www.birtydastards.com/frm/index.php?topic=20288.0 :025:                                   :headbanger: 401 Dog * 401 Molotov :headbanger:  
Civilise the mind but make savage the body  :027:           Im only responsible for my karma :059:

wildwood

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Re: 78 CJ7 Master Cylinder Leak
« Reply #3 on: January 08, 2013, 08:19:11 PM »
god Ade that was a good few years ago...... :hysterical:
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Bulldog67

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Re: 78 CJ7 Master Cylinder Leak
« Reply #4 on: January 08, 2013, 08:24:49 PM »
May 2008 - I just checked  :003:

I got it partky wrong tho, it was 2 bottles of merlot  :party0036: :party0036:
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Bulldog's 22+ trucks: http://www.birtydastards.com/frm/index.php?topic=20288.0 :025:                                   :headbanger: 401 Dog * 401 Molotov :headbanger:  
Civilise the mind but make savage the body  :027:           Im only responsible for my karma :059:

IrishCJ6

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Re: 78 CJ7 Master Cylinder Leak
« Reply #5 on: January 08, 2013, 08:50:14 PM »
Ken,

If you running discs up front then I would defo run a power booster, I would put money on the YJ one working as I have found most parts are interchangable to about 1996 ish. Worst case is you will have to take the brake/clutch cylinders and pedals and install the complete unit. My powersteering is out of a 96 Cheerokee. All I had to do was modify the hoses and find the brackets for the V8 (hardest part) the rest just bolted directly on. You may need to change the pitman arm though as the non PS will not fit (diff splines). The Cherokee one worked for my setup but I have a 4" lift fitted.

PM me if you want more info

Andrew
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Ric Jacques

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Re: 78 CJ7 Master Cylinder Leak
« Reply #6 on: January 18, 2013, 04:28:47 PM »
Yup YJ brakes is the way to go - should be reasonably available at breakers yards....

http://www.jeep-cj.com/forums/f49/cj-manual-brakes-upgrade-yj-power-1301/

I've YJ set up but then I've a YJ tub ;)
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